TWI618875B - Dual-clutch shifting mechanism of electric vehicle - Google Patents

Abstract

An electric vehicle dual-clutch shifting mechanism includes a housing, a second-speed gear shaft, an output shaft, and a connection sleeve, a first-speed gear, a second-speed gear shaft, an output shaft, a first-speed roller, a one-way overrunning clutch, and a second-speed shaft. And the second-speed controllable shift mechanism, the passive gear drives the second-speed gear shaft and the second-speed drive gear to rotate. When the second-speed controllable shift mechanism releases the second-speed shaft, the first-speed gear shaft drives the The output shaft, the one-way overrunning clutch, and the second gear shaft rotate in one gear; when the second gear controllable shift mechanism locks the second gear shaft, the second gear drive gear drives the output shaft to rotate in two gears. The invention has a simple and compact structure and easy fabrication and assembly. Under the condition of constant input speed, the main and passive gears do not move. Through the controllable two-way clutch, the output shaft can get different speeds.

Description

Dual-clutch shifting mechanism of electric vehicle

The present invention relates to a mechanical shifting technology, and more specifically, it is a dual-clutch shifting mechanism for an electric vehicle.

The electric motorcycle motor currently produced on the market relies on an electronic controller to achieve continuous variable speed transmission. It can go from zero to rated speed and is stable compared to the engine motorcycle throttle shift. However, this control method has a lot of shortcomings in the motor. During the climbing and loading, the current continuously increases when the motor is working to increase the torque to change the climbing ability. Therefore, the large torque current is large, the output torque is small, the power consumption is large, and the ability to continue running is greatly shortened.

In order to overcome the shortcomings of current electric motorcycle motors and electronic controllers, the purpose of the present invention is to use a controller to control the motor speed to imitate the throttle of an engine motorcycle, plus a mechanical dual-clutch shifting mechanism to control the controllable machinery The two-way clutch shifts, the main and passive gears do not move under the condition that the input speed can be constant. Through the controllable two-way clutch, the output shaft can get different speeds. Therefore, the present invention solves the lack of electric motorcycles in the case of climbing and loading, so that the torque increases without increasing the current, thereby ensuring the ability of the electric motorcycle to continue and climb, and adapting to electric motorcycles on various roads. Vehicle dual clutch shifting mechanism.

The present invention solves the above problems through the following technical solutions:

A dual-clutch shifting mechanism for an electric vehicle includes a casing, a second-speed gear shaft provided in the casing, and an upper end of the second-speed gear shaft is sleeved with a passive gear. A lower gear is provided with a second-speed driving gear, a transmission gear is provided in the middle of the second-speed gear shaft, and an output shaft is disposed in the housing, and further includes: A connecting sleeve, the upper end of which is sleeved on the bottom end of the output shaft, and the connecting point of the output shaft and the connecting sleeve is set as an inwardly concave slope; a first gear is sleeved on the connection On the outside of the upper end of the sleeve, the first-speed gear meshes with the transmission gear of the second-speed gear shaft. A wedge-shaped groove is provided on the inner circle of the first-speed gear, and a wedge roller and a latch spring are provided in the wedge-shaped groove. The first gear and the connecting sleeve are locked or separated from the output shaft through the clamping spring and the first gear roller; a second gear is provided in the housing and located on the output shaft; Below; a one-way overrunning clutch sleeved on the upper end of the second gear shaft, and the outer side of the one-way overrunning clutch sleeved with the lower end of the connecting sleeve, the one-way overrunning clutch and the second gear shaft Meshing; a first- and second-speed controllable shift mechanism, which is provided below the one-way overrunning clutch, the second-speed controllable shift mechanism can lock or release the output shaft, and the second-speed controllable shift The second-speed driving gear meshes with the second-speed driving gear and passes through the second-speed driving gear of the second-speed gear shaft. The second gear of the output shaft is driven to rotate; the passive gear drives the second gear of the gear shaft and the second gear of the drive gear to rotate, and when the second gear controllable shift mechanism releases the second gear, The first-speed gear shaft drives the output shaft, the one-way overrunning clutch, and the second-speed shaft to rotate in the first gear; when the second-speed controllable shift mechanism locks the second-speed shaft, the second-speed drive gear Drive the output shaft to rotate in two gears.

The second-speed controllable shifting mechanism includes: a connecting bearing sleeved on the second-speed shaft, and the connecting bearing is located below the one-way overrunning clutch; a second-speed cam, sleeved on the second gear On the second gear shaft and below the connecting bearing; a controllable shift cage, which It is sleeved on the outer side of the second-speed cam, and the controllable shift holder is connected with the second-speed cam through a positioning pin, and the controllable shift holder is provided with a groove; a second-speed roller It is located between the controllable shift cage and the second-speed cam. When the second-speed roller falls in the groove, the controllable shift cage, the second-speed cam, and the second-speed cam The shaft is locked; a hook is fixed on a support frame through a nut, a hook is provided on the hook, the hook abuts the controllable shift holder, and the hook is on the cable It can be disengaged from the controllable shift cage when pulled; a second-speed passive gear is sleeved on the outside of the connecting bearing and the controllable shift cage, and the second-speed passive gear and the second The active gear of the second gear is engaged, and the second gear of the passive gear is connected to the controllable shift cage through a tension spring; when the hook is disengaged from the controllable shift cage, the controllable shift cage and The second-speed cam is relatively rotated and moved under the action of the tension spring, and the second-speed roller falls into the groove to move the second-speed cam Controllable shifting holder, said second gear of said second gear shaft and cam lock.

A protrusion is provided on an outer edge of the controllable shifting retainer, and abuts against the hook through the protrusion.

The hook is provided with two perforations, and the nut passes through one of the perforations to fix the hook on the support frame; the cable passes through the other perforation to drive the hook Turn.

The inner surface of the second gear cam is engaged with the second gear shaft through a spline, and the outer surface of the second gear cam is evenly distributed with bumps.

When the projection is aligned between two adjacent grooves on the controllable shift holder, the second-speed roller may fall into the groove.

The support frame is fixed in the housing, and one end of the support frame extends upward Out and formed with upper and lower support rods for fixing the hook.

The invention has the advantages of simple and compact structure and easy fabrication and assembly. Under the condition that the input speed can be constant, the main and passive gears do not move. Through the controllable two-way clutch, the output shaft can get different speeds, and the effect is obvious.

1‧‧‧shell

2‧‧‧second gear shaft

21‧‧‧Passive Gear

22‧‧‧Second Gear Drive Gear

23‧‧‧Drive gear

3‧‧‧ output shaft

4‧‧‧Connector

5‧‧‧first gear

51‧‧‧ wedge groove

6‧‧‧first gear roller

7‧‧‧One-way overrunning clutch

8‧‧‧Second gear shaft

9‧‧‧Connected bearings

10‧‧‧second gear passive gear

11‧‧‧ hook

111‧‧‧perforation

12‧‧‧ Controllable shift cage

121‧‧‧ groove

13‧‧‧ positioning pin

14‧‧‧Second gear cam

141‧‧‧ bump

15‧‧‧ support

16‧‧‧ Spring

17‧‧‧Second-speed roller

18‧‧‧ Lasso

FIG. 1 is a sectional view of an embodiment of the present invention.

Fig. 2 is a schematic view of the C-C arrow structure of Fig. 1.

FIG. 3 is a schematic view of the B-B arrow structure of FIG. 1.

FIG. 4 is a schematic diagram of an assembly structure of a second-speed cam and a controllable shift cage of the present invention.

Fig. 5 is a schematic view of the A-A arrow structure of Fig. 1.

FIG. 6 is a schematic diagram of the structure in the other state of the A-A arrow in FIG. 1.

FIG. 7 is a schematic view of the D-direction structure of FIG. 1.

The present invention is described in detail below in conjunction with specific embodiments.

Referring to FIG. 1, FIG. 1 is a cross-sectional view of an embodiment of the present invention. The dual-clutch gearshift mechanism of the electric vehicle in this embodiment includes a housing 1, a second-speed gear shaft 2, an output shaft 3, a connection sleeve 4, a first-speed gear 5, a first-speed roller 6, a one-way overrunning clutch 7, and two Gear shaft 8 and second gear controllable shift mechanism.

As shown in FIG. 1, the second-speed gear shaft 2 is provided in the housing 1. A passive gear 21 is sleeved on the upper end of the second-speed gear shaft 2. The passive gear 21 is used to connect a motor. The motor drives the passive gear 21 to rotate, thereby driving the second-speed gear shaft 2 to rotate. The second gear shaft 2 A second-speed driving gear 22 is sleeved at the lower end portion, and a transmission gear 23 is provided in the middle of the second-speed gear shaft 2.

The output shaft 3 is disposed in the casing 1. The upper end of the connection sleeve 4 is sleeved on the bottom end of the output shaft 3, and the connection between the output shaft 3 and the connection sleeve 4 is set as an inwardly concave slope. A first gear 5 is sleeved outside the upper end of the connection sleeve 4. The first-speed gear 5 meshes with the transmission gear 23 of the second-speed gear shaft 2. As shown in FIG. 5 and FIG. 6, the inner surface (that is, the inner circle) of the first-speed gear 5 is provided with a wedge-shaped groove 51, and the wedge-shaped groove 51 is provided with a first-speed roller 6 and a snap spring, The clamping spring and the first-speed roller 6 lock or separate the first-speed gear 5, the connection sleeve 4 and the output shaft 3.

The second gear shaft 8 is disposed in the casing 1 and is located below the output shaft 3. The one-way overrunning clutch 7 is sleeved on the upper end of the second speed shaft 8. The lower end of the connecting sleeve 4 is sleeved outside the one-way overrunning clutch 7. The one-way overrunning clutch 7 is engaged with the second gear shaft 8.

A second-speed controllable shifting mechanism is provided below the one-way overrunning clutch 7, the second-speed controllable shifting mechanism can lock or release the output shaft 3, and the second-speed controllable shifting mechanism and The second-speed driving gear 22 meshes, and the second-speed driving gear 22 of the second-speed gear shaft 2 drives the second-speed rotation of the output shaft 3. The second-speed controllable shifting mechanism includes a connection bearing 9, a second-speed passive gear 10, a hook 11, a controllable shifting cage 12, a positioning pin 13, a second-speed cam 14, a tension spring 16, and a second-speed roller 17 and the like.

As shown in FIG. 1, a connecting bearing 9 is sleeved on the second gear shaft 8, and the connecting bearing 9 is located below the one-way overrunning clutch 7. The second gear cam 14 is sleeved on the second gear shaft 8, and the second gear cam 14 is located below the connecting bearing 9. A controllable shift cage 12 is sleeved on the outside of the second-speed cam 14, and the controllable shift cage 12 and the second-speed cam 14 pass through The positioning pins 13 are connected as shown in FIGS. 2 and 7. A groove 121 is defined in the controllable shift holding frame 12. The second-speed roller 17 is disposed between the controllable shift cage 12 and the second-speed cam 14. As shown in FIG. 3, when the second-speed roller 17 falls in the middle of the groove 121, The controllable shifting cage 12 and the second-speed cam 14 are locked with the second-speed shaft 8.

Referring to FIG. 1, the hook 11 is fixed on a support frame 15 through a nut. A pull cable 18 is provided on the hook 11, a protrusion is provided on an outer edge of the controllable shift holder 12, and the hook 11 abuts the projection on the controllable shift holder 12, and The hook 11 can be disengaged from the controllable shift holder 12 when the cable 18 is pulled, as shown in FIG. 2 and FIG. 7. The hook 11 is provided with two perforations, and the nut passes through one of the perforations to fix the hook 11 on the support frame 15; the cable 18 passes through the other perforation 111. The second-speed passive gear 10 is sleeved on the outer side of the connecting bearing 9 and the controllable shifting cage 12. The second-speed passive gear 10 meshes with the second-speed driving gear 22, and the second-speed passive gear 10 and the controllable shift holder 12 are connected through a tension spring 16. When the hook 11 is disengaged from the controllable shift retainer 12, the controllable shift retainer 12 and the second-speed cam 14 are relatively rotated and moved under the action of the tension spring 16. The gear roller 17 falls into the groove 121 and locks the controllable shifting cage 12, the second gear cam 14 and the second gear shaft 8.

The inner surface of the second gear cam 14 meshes with the second gear shaft 8 through a spline, and the outer surface of the second gear cam 14 is evenly distributed with projections 141. When the projection 141 is aligned between two adjacent grooves 121 on the controllable shift holder 12, the second-speed roller 17 may fall into the groove 121, so that The shift-controlling cage 12 and the second-speed cam 14 are locked with the second-speed shaft 8.

The support frame 15 is fixed in the casing 1, and one end of the support frame 15 protrudes upward, and upper and lower support rods for fixing the hook 11 are formed.

The working principle of the invention is:

An external DC motor drives the driven gear 21 to rotate, and the driven gear 21 drives the transmission shaft 23 on the second-speed gear shaft 2 and the second-speed drive gear 22 to rotate. When the hook 11 and the controllable shift retainer 12 are in the state of the second figure, the positioning pin 13 puts the controllable two-way clutch in the state of the third figure, and the second-speed roller 17 is separated from the second-speed cam 14 and the second-speed shaft 8 The second gear passive tooth 10 and the second gear shaft 8 are also in a separated state. The mechanism of the present invention is in a first gear state.

When the mechanism of the present invention is in the first speed state, the second speed gear shaft 2 drives the first speed gear 5. As shown in FIG. 5, the one-way overrunning clutch 7 and the first-speed gear 5 rotate clockwise, and the first-speed roller 6 and the first-speed gear 5 and the connection sleeve 4 are automatically locked to drive the output shaft 3 to rotate under the action of the inclined surface. Referring to FIG. 1, the one-way overrunning clutch 7 is in a disengaged state, and the output shaft 3 and the second gear shaft 8 are in a disengaged state. At this time, the first gear is in a normal working state.

In order to change the second gear, the second gear driving gear 22 drives the second gear passive gear 10, as shown in FIG. 2, as long as the pull cable 18 is pulled on the hook 11, the hook 11 and the controllable shift holder 12 are completely disengaged. On, as shown in Figure 7. Under the action of the tension spring 16, the controllable shifting cage 12 and the second-speed cam 14 are caused to rotate relative to each other, as shown in Fig. 4 and Fig. 1 under the action of the inclined surface; the second-speed cam 14 and the second speed are passive The gear 10 and the second-speed roller 17 are automatically locked, and at the same time, the second-speed shaft 8 is driven to rotate clockwise. When the second gear shaft 8 rotates clockwise, the standard bearing unidirectional overrunning clutch 7 is automatically locked, driving the connecting sleeve 4 and driving the output shaft 3 at the same time. Referring to FIG. 6, when the output shaft 3 rotates clockwise, the first speed roller 6 is automatically separated from the connecting sleeve 4 and the first speed gear 5. Referring to FIG. 1, the second gear shaft 8 drives the one-way overrunning clutch 7 at the same time, and the one-way overrunning clutch 7 drives the connection sleeve 4 to rotate the output shaft 3 counterclockwise. At this time, the shifting mechanism of the present invention is in the second gear working state. .

It should be understood that these embodiments are only used to illustrate the present invention and not to limit the present invention. Ming's scope. In addition, it should be understood that after reading the teaching of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the scope of the patents attached to this application.

1‧‧‧shell

2‧‧‧second gear shaft

21‧‧‧Passive Gear

22‧‧‧Second Gear Drive Gear

23‧‧‧Drive gear

3‧‧‧ output shaft

4‧‧‧Connector

5‧‧‧first gear

6‧‧‧first gear roller

7‧‧‧One-way overrunning clutch

8‧‧‧Second gear shaft

9‧‧‧Connected bearings

10‧‧‧second gear passive gear

11‧‧‧ hook

12‧‧‧ Controllable shift cage

13‧‧‧ positioning pin

14‧‧‧Second gear cam

15‧‧‧ support

16‧‧‧ Spring

17‧‧‧Second-speed roller

Claims (7)

A dual-clutch shifting mechanism for an electric vehicle includes a casing and a second-speed gear shaft disposed in the casing. An upper end of the second-speed gear shaft is sleeved with a passive gear and the second-speed gear shaft A lower gear is provided with a second-speed driving gear, and a transmission gear is provided in the middle of the second-speed gear shaft. An output shaft is provided in the housing, and the electric vehicle dual-clutch shifting mechanism further includes: a A connecting sleeve, the upper end of which is sleeved on the bottom end of the output shaft, and the connection between the output shaft and the connecting sleeve is set as an inwardly recessed slope; a first gear is sleeved on the connecting sleeve On the outer side of the upper end, the first-speed gear meshes with the transmission gear of the second-speed gear shaft, a wedge-shaped groove is provided on an inner circle of the first-speed gear, and a wedge roller and a snap spring are arranged in the wedge-shaped groove. The first-speed gear and the connecting sleeve are locked or separated from the output shaft through the snap spring and the first-speed roller; a second-speed shaft is provided in the housing and is located below the output shaft ; A one-way overrunning clutch, which is sleeved on the upper end of the second gear shaft, and A lower end of the connecting sleeve is sleeved on the outer side of the one-way overrunning clutch, the one-way overrunning clutch is meshed with the second gear shaft, and a first and second speed controllable shift mechanism is provided below the one-way overrunning clutch. The second-speed controllable shift mechanism can lock or release the output shaft, the second-speed controllable shift mechanism meshes with the second-speed drive gear, and the second-speed drive through the second-speed gear shaft The gear drives the second gear of the output shaft to rotate; the passive gear drives the second gear of the gear shaft and the second gear of the active gear to rotate. When the second gear controllable shift mechanism releases the second gear, The first gear shaft drives the output The shaft, the one-way overrunning clutch and the second gear shaft rotate in a first gear position; when the second gear controllable shift mechanism locks the second gear shaft, the second gear driving gear drives the output shaft at Second gear rotation. The dual-clutch gearshift mechanism for an electric vehicle according to item 1 of the scope of patent application, wherein the second-speed controllable shift mechanism includes: a connecting bearing sleeved on the second-gear shaft, and the connection A bearing is located below the one-way overrunning clutch; a second-speed cam is sleeved on the second-speed shaft and is located below the connecting bearing; a controllable shifting cage is sleeved on the The outer side of the second gear cam, and the controllable shift cage is connected with the second gear cam through a positioning pin. The controllable shift cage is provided with a groove; the second gear roller is provided in the Between the controllable shift cage and the second-speed cam, when the second-speed roller falls in the groove, the controllable shift cage, the second-speed cam, and the second-speed cam The gear shaft is locked; a hook is fixed on a support frame through a nut, and a hook is provided on the hook; the hook abuts the controllable shift holding frame, and the hook is on the cable It is disengaged from the controllable shift cage when pulled; a two-speed passive gear is sleeved on the connecting bearing and Outside the controllable shift cage, the second-speed passive gear meshes with the second-speed drive gear, and the second-speed passive gear and the controllable shift cage are connected through a tension spring; the hook When disengaged from the controllable shifting cage, the controllable shifting cage and the second-speed cam move relative to each other under the action of the tension spring, and the second-speed roller falls into the groove The controllable shift cage, the second-speed cam and the second-speed shaft are locked inside. The electric vehicle dual-clutch shifting mechanism according to item 2 of the scope of patent application, wherein the A protrusion is provided on an outer edge of the shift-controlling retainer, and abuts the hook through the protrusion. According to the second clutch shifting mechanism of an electric vehicle according to the scope of the patent application, the hook is provided with two perforations, and the nut passes through one of the perforations to fix the hook to the support. Rack; the cable passes through another perforation to drive the hook to rotate. According to the second clutch shifting mechanism of an electric vehicle according to the scope of the patent application, the inner surface of the second gear cam is meshed with the second gear shaft through a spline, and the outer surface of the second gear cam is evenly distributed. Bump. The dual-clutch gearshift mechanism for an electric vehicle according to item 5 of the scope of patent application, wherein when the projection is aligned between two adjacent grooves on the controllable shift cage, the second The rollers fall into the groove. The dual-clutch gearshift mechanism for an electric vehicle according to item 2 of the scope of the patent application, wherein the support frame is fixed in the housing, one end of the support frame protrudes upward, and an upper part for fixing the hook is formed. , The lower support rod.